trillion

noun tril·lion \ ˈtri(l)-yən \
Updated on: 12 Nov 2017

Definition of trillion

1 :a number equal to 1,000 times one billion — see Table of Numbers
2 :an indeterminately large number
  • a trillion mosquitoes out tonight

trillion

adjective

trillionth

play \-yən(t)th\ adjective or noun

Recent Examples of trillion from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trillion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of trillion

French, from tri- + -illion (as in million)


TRILLION Defined for English Language Learners

trillion

noun

Definition of trillion for English Language Learners

  • : the number 1,000,000,000,000 : one thousand billion

  • : a very large amount or number

  • : the number 1,000,000,000,000,000,000 : one million million million


TRILLION Defined for Kids

trillion

noun tril·lion \ ˈtril-yən \

Definition of trillion for Students

:a thousand billions


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